Heat exchange apparatus



y 1933- A. L. STAMSVIK 1,916,395

' 7 HEAT EXCHANGE APPARATUS Filed Jan. 14,.1931 2 Sheets-Sheet 2 7 Y J y 6' Invenior 4Z1n d .Z. 7aiizw%' A llorney Patented Jqly 4, 1933 ALFREDL. S'I'AlVISVIK, OF G ROVE CITY, PENNSYLVANIA HEAT EXCHANGE APPARATUS Application filed January 14, 1931.

This invention relates to certain new and useful improvements in an apparatus essentially but not necessarily adapted for cooling lubricating oil forming a continuation in part of the subject matter of my c0 ending application Serial No. 44:6,669 filed under date of April 23,1930, and the primary ob j ect of the present invention is to render more efficient, safe and less liable to damage an apparatus of this character, the invention comprehending the provision of novel means for preventing the passage of one fluid or liquid under pressure in one compartment of the ap paratus into a second compartment that contains a second or another fluid or liquid, regardless of the pressure or vacuum in the said other compartment.

A still further object of the invention is to provide an improved construction of section or unit for such apparatus whereby the results desired and as above mentioned are attained.

Other objects and advantages of the invention will become more apparent as the invention is hereinafter more specifically described and claimed,'reference being had to the accompanying drawings forming a part of the specification, and wherein:

Figure 1 is a top plan view of the apparatus, certain parts being shown in section.

Figure 2 is a vertical detail sectional view taken substantially on the line 22 of Figure 1.

Figure 3 is a transverse sectional view taken substantially on the line 3-3 of Figure 2,in the direction of the arrows.

Figure 4. is a similar view taken substan-' tially on the line 4-4 of Figure 2.

Figure 5 is a plan view ofone of the head or end plates.

Figure 6 is a similar view of the other-end or head plate.

Figure 7 is a fragmentary plan view of a portion of an end or head plate, illustratin certain details of construction to be herein after more fully referred to.

Figure 8 is a fragmentary detail sectional elevational view taken at substantially right angles to Figure 7.

With reference more in detail to the drawings, it will be seen that the device comprises a plurality of units or plates each being substantially identical in construction with the exception of the end or head plates both of which are identical in construction but dif- Serial No. 508,757.

fered slightly from the intermediate units or plates as will be hereinafter made manifest.

Each of the intermediate plates 5 is provided with an integral peripheral flange 6 producinga recess or hollow on each side 7 and 8 respectively of the plate. On one side thereof, for example, the side 7, the plate is provided with a plurality of spaced inwardly directed radial lugs 9 while on the opposite side thereof, for example the side 8, the plate is provided with a similar number of lugs 10 having the bores thereof registering with the bores of the lugs 9. Two adjacent lugs 9 are connected by a boss or transverse rib 11, adjacent which the plate is provided with a segmental port or slot 12. Between one of the said connected lugs 9 and a next adjacent lug 9, the plate is provided with a further segmental port or slot 13. On side 8 of the plate and opposite the slot 13 there is provided between two adjacent lugs 10 and integral with said lugs 10 a segmental boss 14. Diametrically opposite the boss 14 on side 8 of the plate, there is provided a lug 15 having an orifice 16 opening through the plate, the functions of which are more or less fully set forth in my application above specified.

The plates are arranged in longitudinal alinement and have corresponding faces disposed in opposed relation forming alternate chambers 17 and 18 respectively. The chambers are placed in alternate communication by'setting each plate a half a turn in advance of the next preceding plate so that when the plates are assembled, it will be seen that ports 12 communicate the chambers 17 vat opposite sides of the device in an alternate manner;

the ports ,13 communicate the chambers 18 at v the top and bottom in an alternate manner, while the orifices 16 communicate the chambers 18 at the top and bottom of the device in an alternate manner, with the result that such an arrangement-of the orifices will permit of the draining of the water or cooling therewith an inwardly directed peri heral flange 20. On the inner face thereo each end plate is provided with lugs 21 radiating slot, the fluid has a tendency for flowinginwardly and arranged in circumferential "spaced relation, the lugs being suitably a rtured for registry with the apertured ugs on the adjacent intermediate plate 5.

The several intermediate plates 5, and said end plates 19 are secured together by-"rods 22 passing through alined lugs 9, 10 and 21. Nuts 23-are threaded on the ends of rods 22. Each end plate 19 is also provided with a a segmental boss 24 having a segmental 'recess or port 25 formed therein.

Communicating with the recess 2? 1s an oil orifice 26. Within the confines of 1ts r m,

' each end plate is also provided with a water port or opening 27.

In actual practice it will be seen that oil entering through the orifice 26 of one end plate will flow in a tortuous path through the chambers 17 to discharge from the device through a like orifice 26 on the end plate 19 at the opposite endof the device. Likewise water will enter the first chamber 18 through the water port 27 in one end plate and flow in alternate directions through the chambers 18 to discharge from the device through the water orifice 27 in the end plate at the other end of the device.

It will be also noted, that each intermediate plate 5 on its opposite sides is provided with strengthening and fluid agitating ribs 27a, and that each end plate 19 on its inner side is rovided with suitable strengthening lugs 2 6 whereby to prevent buckling of the plates and to enable the plates to withstand a high degree of pressure. Also the ribs 27a present their ends to the ports through which the coolin fluid and the fluid to be cooled entersthe c ambers 17 and .18

and distribute and create turbulence of the sponding bosses arcuate. The slots or ports 12, 13, and 25 are also segmental instead of arcuate as is the case in the structure of the above identified application. The said bosses and slots respectively being of segmental shape, is an improvement over the arcuate shaped bosses and slots in that the former structure permits the fluid .in the respective compartments to start across each plate in an even manner thus reducing the pressure drop in the heat exchanger. In that type of-device using the arcuate shaped boss and across the plate to cross its own pathcausing confusion and some restriction in the flow. I

Also, according to the present invention,

the lugs 9, l0 and 21 are each of a greater diameter than the diameter of the rods 22 thus providing a clearance in the bores of the lugs, about the said rods, and the bosses 11, 14, and 24 are each provided with a groove 28 that connects the bores of the pair of lugs 29. The washers 29 cooperate with the cor responding ends of the lug extensions 21, to

provide radial outlets 30, formed by groovin the outermost edge of each lug extension 21 From the foregoing it will be apparent, that ,the bores of the alined lugs 9, 10 and 21, to-

gether with the lug extensions 21 provide pressure release or vent passages extending from one end to the other of the device and opening at said ends of the device. The grooves 28 provide conduits connecting such vent passages with each of the chambers 17 and 18. Thus it will be seen, that for example if the fluid, passin from one chamber 17 to the next chamber 1 reach such a de ree of pressure, as to cause leakage of the uid between two abutting bosses 11, the fluid instead of passing into a chamber 18 will accumulate in the grooves 28 of the said abutting bosses 11. The fluid thus accumulating in the opposed grooves 28 will flow longitudinally of the grooves toward the lugs 9 connected by the bosses 11. The fluid will consequently enter the bores of the said lugs 9 and will then flow through the bores of alined lugs toward either end of the device to exhausttherefrom through the ports 30 thus relieving the pressure which was the cause of such leakage.

The same result will obviously be obtained in the event that the fluid passlng from one chamber 18 into the next adjacent chamber 18 should also reach abnormal pressure so as to cause leakage of the fluid'between 'two abutting bosses 14 for passing one chamber to the other.

While the grooves 28 are here shown communicatin with the bores of the aligned lugs 9, it will o obvious that they could be extended through the flanges 6 of the plates and thereby indicate from the exterior of the device the exact location of a leak, should the latter occur.

Thus it will be seen, that the present invention contemplates the provision of means for relieving abnormal pressure in the device and will also positively prevent the passage of one fluid passing from one chamber to another, into an intermediate chamber to mingle with the fluid in the said intermediate chamber.

Obviously then the heating medium and the substance to be cooled will pass through the device from one end to the other without possibility of any of the cooling mediums leaking into the tortuous passage traversed by the medium to be cooled, or vice versa. Should any fluid leak into "the grooves "28, the fact will be rendered. apparentto an observer.

Even though I have herein shown and described the preferred embodiment of the invention, it is to be understood that the same is susceptible of changes, modifications and improvements coming within the scope of the appendedclaims.

Having thus described my invention, what I claim as new is; a

1. A heat exchange a paratus comprising a plurality of chamber ormin units respectively provided on opposite sides with a plurality of spaced radlal apertured lugs and a boss connecting two adjacent lugs, said boss having a port opening therethrough and said boss being provided with a groove connecting the bores of the lugs at opposite ends of the boss.

'2. A heat exchange apparatus comprising a plurality of chamber forming units disposed one against the other and respectively provided on opposite sides with a plurality of spaced apertured lugs, and a boss provided with a port opening therethrough, the boss connecting two adjacent lugs and being further provided with a groove connecting the bores of said adjacent lugs, rods passing through alined lugs for retainin the units in assembled relation, each of sai lugs having its boss of a diameter greater than the diameter of the rods passing there throu h. v

3. K heat exchange apparatus comprising a plurality of chamber forming units dis posed one against the other and respectively provided on opposite sides with a plurality of spaced apertured lugs, and a boss provided with a port opening therethrough, the boss connecting two adjacent lugs and being further provided with a groove connecting the bores of said adjacent lugs, rods passing through alined lugs for retainin the units in assembled relation, each of said lugs having its boss of a diameter greater than the diameter of the rods passing therethrough, said units including intermediate units and end units, and said units being so arranged relative to one another as to have opposed bosses and lugs respectively disposed one against the other and the bosses on the end units being capable of exhausting exteriorly of the heat exchanger;

4. In a heat exchange device, a plurality of flanged plates which when assembled form alternate chambers for the tortuous passage of a cooling fluid and a fluid to be cooled, each of said plates being formed with a pair of ports and a transverse boss or rib adjacent one of said ports which when positioned against a corresponding boss of another plate each of said plates being formed with a pair of ports and a transverse boss or rib forming the innerboundary of one of said ports, said boss or rib being formed with a groove extending longitudinally thereof.

6. In a heat exchange device, a plurality of flanged plates which when assembled form alternate chambers for the tortuous passage of a cooling fluid and a fluid to be cooled, each of said plates being formed with a pair of ports, and a combined rib and baflle member arranged at right angles to one of said ports, the fluid entering said port striking said ballle member and rendered turbulent thereby, portibns of said rib being raised to form bosses for reinforcing the plates against excess pressure. a.

7. In a heat exchange device, a plurality of flanged plates which when assembled form alternate chambers for the tortuous passage of a cooling fluid and a fluid to be cooled, each ofsaid plates being formed with a air of ports, one of said ports being bounde on the inner side thereof by a transverse boss or rib, and a combined reinforcing and fluid agitating member formed on the plate at right angles tothe other of said ports.

8. In a heat exchange device, a plurality of flanged plateswuich are similar in construction and interchangeable, each of said plates being formed with apair of ports respectively for the cooling fluid and the fluid to be cooled, each of said plates having formed thereon a transverse boss or rib which when laid face to face with a similarplate and rib forms a dividing wall between the two fluids, said rib being formed with a combined safety and leak indicatingtgroove extending longitudinally thereof. I

9. In a heat exchange device, a plurality of flanged plates which are similar in construction and interchangeable, said plates when assembled forming alternate chambers for the tortuous passage of a cooling fluid and a fluid to be cooled. each of said lates being formed with a pair of segmental s raped ports, a transverse rib forming the lnncr boundary of one of said port-s, said Ilb being formed with a combined leak indicating and safety groove extending longitudinally of the device when the plates are in assembled pos1- tion.

In testimony whereof I affix my signature.

ALFRED L. STAMSVIK. 

